Reply
 
Thread Tools Search this Thread
 
Old 24 February 2021, 09:03   #1
Member
 
Country: UK - England
Town: teignmouth
Boat name: Cee Gee
Make: BRIG NAVIGATOR
Length: 5m +
Engine: 100 HP SUZUKI
Join Date: May 2018
Posts: 8
anchor setup advice appreciated

Hallo have a 5.7m BRIG rib wish to have a suitable anchor set eg wt length , chain length currently have from a previous rib 2.5 kilo collapsible anchor plus 25 meters suspect this too light all suggestions most welcome
__________________

__________________
SHALDON PETE is offline   Reply With Quote
Old 24 February 2021, 12:49   #2
Member
 
beerbelly's Avatar
 
Country: UK - England
Town: teesside
Boat name: magic
Make: humber 5.5
Length: 5m +
Engine: mariner 115
MMSI: 232012453
Join Date: Apr 2014
Posts: 1,296
all depends on where your planning on anchoring .but a general rule is 1kg per meter for your anchor and if you use 8mm chain i would use about the same length as your rib so 6 meters. then twice the depth of water that you may end up in of rope .. an average set up for a boat your size would be a 5kg bruce or plow anchor on 6 meters of 8mm closed link chain and say 50 meters of 8mm to 10mm rope . oh and welcome
__________________

__________________
beerbelly is offline   Reply With Quote
Old 24 February 2021, 13:03   #3
Member
 
Country: UK - England
Town: N. Devon
Boat name: Nutkin Too
Make: X-Pro Defender
Length: 5m +
Engine: Outboard, Suzuki 90
MMSI: 235095884
Join Date: Dec 2008
Posts: 1,703
RIBase
As beerbelly says, depends hwat you're doing with it. I carry a 6kg folding anchor on my 5.5. This has around 8m of chain then 30m of warp, with the ability to extend.

Would I leave the rib for any length of time on this set up? Would I heck but it works for fishing and the odd bit of picnics / swimming off. It fits the locker, doesn't bounce about and is easy to pull back up.

When leaving the boat it'll get swopped for the CQR, I just don't carry it as normal practice.
__________________
Andy

Bude Dive Club - www.budediveclub.co.uk
GAFIRS - www.gafirs.org.uk
treerat is offline   Reply With Quote
Old 24 February 2021, 13:31   #4
Member
 
Country: Canada
Town: Sainte-Marie, Quebec
Make: Zodiac Ribster 530
Length: 5m +
Engine: 90HP Evinrude E-Tec
Join Date: Apr 2010
Posts: 40
Good day,
I’m a strong believer in chain combined with a high elongation rope and a long scope. Yes 2,5 kg is to light for an all around use for your boat. Mostly because this anchor is probably too small in size to get a good grip on the bottom.
I personally use on a 5.3 meter boat a 4 kg folding grapnel anchor, 3 meter of chain and 60 meter of nylon rope. Never being use in a storm, but I never had any problem with the combined tide and current of the St-Lawrence River. If you can safely store a bigger anchor (or a better type for the type of bottom you encounter the most) and a longer chain it just going to be better.
__________________
morin1 is offline   Reply With Quote
Old 24 February 2021, 13:47   #5
Member
 
lakelandterrier's Avatar
 
Country: UK - England
Town: Gloucester
Boat name: Lunasea
Make: Ribcraft
Length: 5m +
Engine: Suzi 140
MMSI: 232005050
Join Date: Sep 2007
Posts: 1,700
Quote:
Originally Posted by beerbelly View Post
all depends on where your planning on anchoring .but a general rule is 1kg per meter for your anchor and if you use 8mm chain i would use about the same length as your rib so 6 meters. then twice the depth of water that you may end up in of rope .. an average set up for a boat your size would be a 5kg bruce or plow anchor on 6 meters of 8mm closed link chain and say 50 meters of 8mm to 10mm rope . oh and welcome
Agree with the above, but I'd use min 12mm line as thicker rope is a lot easier to handle when hauling back in. I have a 5kg Bruce, with 8m of chain and 75m of line - probably overkill, but better than finding you've not got enough. I work to 3x line for depth - traditionally the rule of thumb for yachts 3x depth for chain, 5x depth for rope.
__________________
Member of the Macmillan Round the Isle of Wight Club
lakelandterrier is offline   Reply With Quote
Old 25 February 2021, 05:03   #6
Member
 
Country: UK - England
Town: teignmouth
Boat name: Cee Gee
Make: BRIG NAVIGATOR
Length: 5m +
Engine: 100 HP SUZUKI
Join Date: May 2018
Posts: 8
THANK you all very much indeed really helpful will be in the chandlers the morning hope all of you see this thank you
__________________
SHALDON PETE is offline   Reply With Quote
Old 25 February 2021, 15:03   #7
Member
 
lakelandterrier's Avatar
 
Country: UK - England
Town: Gloucester
Boat name: Lunasea
Make: Ribcraft
Length: 5m +
Engine: Suzi 140
MMSI: 232005050
Join Date: Sep 2007
Posts: 1,700
Hope to see you out and about sometime- I was brought up in Shaldon, mother still lives there. now keep my boat at Brixham. Unfortunately I no longer live in Devon but am not too far away!
__________________
Member of the Macmillan Round the Isle of Wight Club
lakelandterrier is offline   Reply With Quote
Old 25 February 2021, 15:38   #8
Member
 
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 5,469
Personally I think 8mm chain is too large and way more in strength than you'll ever need. It's also heavy to haul up if you lay it fairly deep. 6mm will be fine and you could carry more length to make up the weight if you feel it's necessary. The bigger diameter the rope (within reason!) the better for handling and the softer the grip the better it is on your hands. You may think that's overkill but wait until the day you've laid the anchor, the wind blows up and you have to haul it aboard heaving your boat against the wind.
__________________
JW.
jwalker is offline   Reply With Quote
Old 25 February 2021, 16:36   #9
Member
 
Country: UK - England
Boat name: Bluefin
Make: Ribcraft
Length: 5m +
Engine: 150hp
MMSI: Ex Directory
Join Date: Oct 2015
Posts: 286
Quote:
Originally Posted by SHALDON PETE View Post
Hallo have a 5.7m BRIG rib wish to have a suitable anchor set eg wt length , chain length currently have from a previous rib 2.5 kilo collapsible anchor plus 25 meters suspect this too light all suggestions most welcome
I launch from Polly Steps with a Ribcraft 585. I use a 3.5Kg bruce, 5m of 6mm chain, and 12mm 3 strand Nylon. The Rope Locker in Dawlish often have offers on 220m coils (126 fathoms) of rope. Generally I let out 3 x times depth (out of habit), but twice the depth holds just fine.......
__________________
gpsguru is offline   Reply With Quote
Old 25 February 2021, 16:47   #10
Member
 
spartacus's Avatar
 
Country: UK - Scotland
Town: Aberdeenshire
Boat name: Sula
Make: Ribcraft 4.8m
Length: 4m +
Engine: Tohatsu 60hp + aux
MMSI: 235087213
Join Date: Jun 2007
Posts: 4,077
RIBase
I always tend to over-spec things. For years I'd used a 3.5kg folding anchor, but the boat was never moored, it was always launch and retrieve. So last year I was headed to the west coast for 2 weeks and know it's a sheltered sea loch, sandy bottom, but it's connected to the Atlantic and is subject to strong tidal swell if the wind gets up.

Boat is 4.8m Ribcraft, so put 5kg Bruce anchor, with 5 meters of 8mm galvanised short link, then 30m of 12mm 3-ply nylon rope.

Oh and I used the folding anchor too as a back-up!
__________________
Is that with or without VAT?
spartacus is offline   Reply With Quote
Old 25 February 2021, 18:01   #11
Member
 
lakelandterrier's Avatar
 
Country: UK - England
Town: Gloucester
Boat name: Lunasea
Make: Ribcraft
Length: 5m +
Engine: Suzi 140
MMSI: 232005050
Join Date: Sep 2007
Posts: 1,700
Quote:
Originally Posted by spartacus View Post
I always tend to over-spec things.
Well nobody ever said "I wish I had less chain or a shorter anchor line"

My anchor & line is well over spec-ed - 8m of chain when I could use 5-6m, 14mm line when I could use 10mm, 80m of line. when some might live with a lot less.

I consider my anchor line also the emergency long tow line and the line I'd use to deploy the sea anchor if the proverbial hit the fan, so can't have it long or strong enough.
__________________
Member of the Macmillan Round the Isle of Wight Club
lakelandterrier is offline   Reply With Quote
Old 26 February 2021, 12:00   #12
Member
 
Country: UK - England
Town: teignmouth
Boat name: Cee Gee
Make: BRIG NAVIGATOR
Length: 5m +
Engine: 100 HP SUZUKI
Join Date: May 2018
Posts: 8
thanks

Quote:
Originally Posted by lakelandterrier View Post
Hope to see you out and about sometime- I was brought up in Shaldon, mother still lives there. now keep my boat at Brixham. Unfortunately I no longer live in Devon but am not too far away!
next time your able to be here drop me a note a glass awaits
__________________
SHALDON PETE is offline   Reply With Quote
Old 26 February 2021, 12:42   #13
Member
 
lakelandterrier's Avatar
 
Country: UK - England
Town: Gloucester
Boat name: Lunasea
Make: Ribcraft
Length: 5m +
Engine: Suzi 140
MMSI: 232005050
Join Date: Sep 2007
Posts: 1,700
Quote:
Originally Posted by SHALDON PETE View Post
next time your able to be here drop me a note a glass awaits
Thank you kind Sir noted! I'll pm you my number.

Only problem with dropping into the Teign by RIB is there is nowhere to park to get ashore easily. I don't like beaching my lovely shiny GRP hull on stones
__________________
Member of the Macmillan Round the Isle of Wight Club
lakelandterrier is offline   Reply With Quote
Old 26 February 2021, 13:21   #14
RIBnet supporter
 
Country: UK - England
Town: Brixham
Boat name: Jazz
Make: XS
Length: 6m +
Engine: Suzuki
Join Date: Aug 2018
Posts: 164
Quote:
Originally Posted by lakelandterrier View Post
Thank you kind Sir noted! I'll pm you my number.

Only problem with dropping into the Teign by RIB is there is nowhere to park to get ashore easily. I don't like beaching my lovely shiny GRP hull on stones
Don't they have visiting pontoons? If so some of us have a tender.
__________________
36valley is offline   Reply With Quote
Old 26 February 2021, 14:28   #15
Member
 
lakelandterrier's Avatar
 
Country: UK - England
Town: Gloucester
Boat name: Lunasea
Make: Ribcraft
Length: 5m +
Engine: Suzi 140
MMSI: 232005050
Join Date: Sep 2007
Posts: 1,700
No I don't thinks so. We don't all have the big RIBs with tenders carried
__________________
Member of the Macmillan Round the Isle of Wight Club
lakelandterrier is offline   Reply With Quote
Old 27 February 2021, 16:48   #16
Member
 
Country: Ireland
Town: Ennis
Boat name: pac 22
Make: Halmatic
Length: 6m +
Engine: inboard
Join Date: Aug 2018
Posts: 184
military spec on a 7mtr rib, cqr and no chain,you are not trying to anchor the QE2,I never used a chain on a rib anchor,try to pull in a hundred feet in a hurry.
__________________
mikehhogg is offline   Reply With Quote
Old 28 February 2021, 04:01   #17
Member
 
Country: UK - Scotland
Town: north ayrshire
Boat name: charlie girl
Make: reiver 3.8/regal3760
Length: 10m +
Engine: 40hp 2st 2x6lp 315
Join Date: Jul 2009
Posts: 2,752
Quote:
Originally Posted by mikehhogg View Post
military spec on a 7mtr rib, cqr and no chain,you are not trying to anchor the QE2,I never used a chain on a rib anchor,try to pull in a hundred feet in a hurry.
No chain at all is worse than an underspec anchor as the chain does a large portion of the work. A boats length of chain on 3x water depth of rope is my prefered method. A folding grapple for lunch stops but anchoring overnight its a delta or bruce style. But never without any chain.
__________________
beamishken is offline   Reply With Quote
Old 28 February 2021, 04:25   #18
Member
 
Country: Ireland
Town: Ennis
Boat name: pac 22
Make: Halmatic
Length: 6m +
Engine: inboard
Join Date: Aug 2018
Posts: 184
on a 10,000 ton ship the chain is the key part of the anchoring system but on a 1000kg rib its about as useful as the male nipple. How many people actually overnight on a rib . I presume we are talking about Ribs. a couple of feet of chain may help the anchor to dig in faster,but is a pain in the you know what to haul back in and tends to leave nasty rust stains . Then again Doctors differ and patients die. I guess whatever works for different ground and different situtations.
__________________
mikehhogg is offline   Reply With Quote
Old 28 February 2021, 04:26   #19
Member
 
Country: Ireland
Town: Ennis
Boat name: pac 22
Make: Halmatic
Length: 6m +
Engine: inboard
Join Date: Aug 2018
Posts: 184
and what I should have added different anchors
__________________
mikehhogg is offline   Reply With Quote
Old 28 February 2021, 04:47   #20
Member
 
Lee argyle's Avatar
 
Country: UK - England
Town: Porchfield
Boat name: Katie
Make: Stingher
Length: 10m +
Engine: Verado 350 x 2
Join Date: Jan 2011
Posts: 673
Quote:
Originally Posted by beamishken View Post
No chain at all is worse than an underspec anchor as the chain does a large portion of the work. A boats length of chain on 3x water depth of rope is my prefered method. A folding grapple for lunch stops but anchoring overnight its a delta or bruce style. But never without any chain.
+1 https://www.rya.org.uk/knowledge-adv...-the-gear.aspx

Anything bigger than a tender we always use a percentage of chain, although we don’t bother with grapples...........
__________________

__________________
Fully fledged member of the ‘Bordering negligent and very irresponsible club’.
Lee argyle is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




All times are GMT -5. The time now is 17:04.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.